When Allison’s brain tumor resurfaces, its aftermath could have life-altering consequences for her friends and family, on the sixth season finale of MEDIUM.

When an animal rights activist working undercover at a farm goes missing, Allison befriends a pig that could hold the key to the woman’s whereabouts. Also, Joe’s special birthday gift from Marie leaves him wondering how she was able to obtain it.

Distressed Ariel starts to lose hours and years of time in her life and must look to her future self to figure out how to get back to the present.

After a neighbor is killed, Allison installs a high-tech burglar alarm that she thinks may be communicating with Marie.

Allison bonds with the mysterious girl from her dreams who she now must protect when the serial killer eyes the girl as the next target.

Allison and her daughters dream of the same mysterious girl who may be linked to the bizarre serial murders of entire families. Joe and his boss find themselves at odds while working on a major project.

After Allison is mugged, she decides to take charge by enrolling in self-defense classes. Also, Devalos investigates a teenager’s rape and an undercover cop’s possible murder, and the suspect may have very close ties to Scanlon.

Allison keeps seeing the face of one man in the faces of other people, including Joe, and must figure out why. Meanwhile, Ariel has a difficult time babysitting a mischievous boy.

Allison dreams about a schizophrenic child, but when she meets her in real life, she seems perfectly normal — but has a mentally ill roomate. Allison must determine if the child is responsible for killing her parents. Meanwhile, Bridgette develops feelings for a boy.

Allison wrestles with a particularly disturbing dream, all while trying to figure out why a recently paroled convict is so intent on destroying her boss.

An investigation into serial killings takes an unforeseen turn when the prime suspect ends up dead. Before long, the ghost of the suspect reaches out to Allison in an effort to redeem himself, connect with his girlfriend—and even assist in the case. Meanwhile, Joe is enlisted to assess a novel authored by his boss.

Odd things occur for Allison, starting with her new sensitivity to light and the fact that the sunglasses she wears shows mysterious numbers that can tie into people’s life expectancies. Like that wasn’t enough, Allison has a dream about Joe’s dad, causing Joe to begin taking better care of his health.

Allison suspects Ariel’s new boyfriend of murder, and fears the worst. Meanwhile, Bridgette starts uploading videos on Internet where a man is embarrassing himself and it results in her in trouble.

The SUV Allison rents has unusual features, including a satellite radio that allows her to hear other people’s conversations.

Allison has vivid nightmares that insert her into scenes from the classic horror film “Night of the Living Dead,” which leave her with unexplained cuts and bite marks and possible clues that could lead her to a funeral director’s murderer, on a special Halloween episode.

On the 100th episode of Medium, an infant is kidnapped and Allison investigates the disappearance. But when she becomes too obsessed with the infant, Joe starts to get worried about her. Meanwhile, Bridgette and Joe are surprised after Marie manages to play the clarinet without any issues even though she hasn’t attended any classes, while Bridgette is struggling to play.

Allison realizes that Dr. Thomas, the eminent physician who saved her life, is also a mercy killer who makes daily life-and-death decisions, but often chooses death as his first option.

When Ariel acts strangely, Allison becomes worried that her daughter might be possessed with the spirit of a murdered stripper who wants revenge on her killer.

Allison and her family cope with the outcome of her brain surgery; Scanlon and Devalos investigate the possible stalking of a popular local sportscaster.